Integrated Technology 7000 yrs+

Rocket Stove Powering On

Get Hot Chow With Low Costs

Rocket stoves are super efficient. All you need is a bundle of sticks or dried cobs to cook dinner for the whole family.  Best of all, this fuel is easy to find. There’s no need to chop down trees or burn fossil fuel.

Last month we went on a great adventure shaoying from shaoyingtours.comstaying in an ancient village in the Shandong province of north-eastern China. We went with fellow Australian, Shoaying. She grew up in rural China and has expertise in Permaculture and Environment Management.

Shoaying is patient, knowledgeable, well-organised and fun. We were keen to see early stove technology known as the Kang.  April and Shaoying on Mulberry Island - shaoyingtours.comOur Permaculture courses demonstrate the use of integrated technologies such as a hybrid Rocket stove.

According to research at Tongji University, “The Chinese Kang is an ancient integrated home system for cooking, sleeping, domestic heating and ventilation. It is still widely used today in nearly 85% of rural homes in northern China. In 2004, there were 67 million Kangs used by 175 million people.”

Archeologists have found Kangs from 7,000 years ago. The Kang is still cooking, heating, drying herbs and garments and ventilating millions of homes everyday.  Ingeniously, the flue of the stove fans out underneath the big family bed in the next room before rising up a chimney in the next wall.  The warmth must be a joy when it is snowing outside and fuel is low.

Unfortunately, the Chinese Kang is in slow decline due to intense urbanisation. Given that each household uses approximately 4kg of poor quality fuel, a small city of a million people would need to bring in 4,000 tonnes of fuel each day and dispose or reuse the ash. This would incur a transportation and network cost. Not to mention the need to redesign existing urban buildings to incorporate chimneys.

However, more efficient rocket-stoves are growing in popularity in other rural and sub-urban areas of the world.

Ancient Rocket Stove Technology hasn't changed much - shaoyingtours.com

What Is A Rocket Stove?

Essentially, a Rocket Stove has well-engineered air flow, there is a J bend to the chimney and  good insulation to increase combustion temperatures. The hottest spot in a rocket stove is not at the flame, it is a little further up where the gases get fully party. As a result, the gases burn off furiously, whipping around in circles before they go up the chimney. A modern rocket stove sounds like a primitive turbo. To get this effect, it has a very good air intake and an elbow in the chimney. The fuel sits on a grate letting the air rush up from underneath. The combustion chamber is underneath the cookplate. In many other wood stoves, a lot of the heat flies away up the chimney.  The rocket stove intensifies the burn then concentrates energy directly at the pan.

Today, science is building toward a standard for the term ‘Rocket’ stove.  Because there is a tiny-sized, yet big difference between a modern Rocket stove [or Rocket-mass heater] the ancient Kang.  The modern Rocket stove has an insulated post-combustion chamber (technical term for a space between the flametips and the cookplate). This chamber intensifies the burn and reduces potential pollutants.  In addition to this technical development, a moving cowl would increase the Venturi effect of the chimney.

Insulation Builds Intensification

Insulation in a firebox is vital for conserving energy. As a result, the outer area of the stove stays cool. Only the flue heats up. In well insulated stoves, the energy is concentrated on the cook-top.  In China, locally made mud-straw bricks surround their stoves.  Sand or ash in the mud-brick can ensure even higher insulation-rates.  The Kang utilises the residual chimney heat. The chimney gases travel from the cooktop through the wall and fan out along a set of tunnels under the bed in the next room, then up a chimney on the next wall. Unlike the insulated stove, the bed has plenty of thermal mass, and the mattress is thin. So, the bed is toasty warm up by the time the dishes are washed.

Stove Fuel Resourcefulness

dumplings on rocket stove - shaoyingtours.com

Fuel is easy to find for the stove. For instance, most people burn a bundle of prunings from local orchards or stalks from the corn and wheat fields. In addition to these, dried corncobs  (after the juicy kernels have been removed) combust very well.  Each house has a collection of little bundles of sticks at their door and sunning on the roof.   Corn husks (the papery outer layer) are a convenient, easy, biodegradable material. Perfect to wrap the dumplings.  Also, rinsing and drying the wrappers enables easy re-use. Finally, these used wrappers become great starter-fuel for the stove.

steamed buns from rocket stove - shaoyingtours.com

Northern Chinese Kang Stoves are very adaptable. You can cook fish or soup at the bottom of the giant wok and stick corn cakes to the sloping sides. Alternatively, you can use water in the base and insert a grid at half way up to steam foods like the dumplings. The video shows how to make glass noodles.  Rocket Stove cuisine of Northern China doesn’t bake or grill foods. In summary, closed cook-pans with quick cook times are more efficient.

At the end of the day, home-made Mooncakes taste wonderful when steam-baked on a kang stove, the traditional way.

By the way, we have a
Permaculture Design Weekend Course
– Nov17th and Nov18th
come and join us!

 

 

 

 

 

 

 

 

How To Kill Your Garden in 10 Ways

Killing It?

Do you love your garden to death? Most gardens thrive on enthusiasm but this can accidentally kill it in just a few easy steps.

The good news is that a garden doesn’t usually die quickly. But the flip side of the slow decline is that it is a quiet, sulking kind of demise. You might wonder what you’re doing wrong. Or perhaps you wonder now what is really lost in a the death of a garden?

Essentially, poor design kills a garden.  Step outside and ask yourself: How can a garden suffer and die?

 1. Suffocating

Few people understand their landscape. Fewer discover what gardens really need in order to thrive. Basically, it’s all about the soil. There are 5 simple, yet vital, components in soil for growing healthy plants.

The 5 ingredients needed for good soil are: Air pockets, in-ground stored Water, Minerals, Organic Matter and Organisms. Plants need little pockets of air in the soil so they stretch out their roots and grow.  Luckily, air is free. You don’t need to rush out and get any specialist aerating tools. Just sit down and observe how the air is being lost.  Most commonly, air is lost from a garden by people treading all over it. Secondly, air can get pushed out by poor water management. The third way to suffocate the garden is to allow visitors, children, pets, wind and rain to bare the soil. If your garden is doing poorly then leaving the soil to lie naked to the elements will certainly top it off.

2. Drowning

It is easy to kill a garden with bad water management.  Check that there is water in your soil. The best test is to see if you can actually dig a hole. If you need a machine to dig a hole then you have soil that is perfect for making pots but not growing plants. If you find your soil blowing away, you have soil perfect for making children’s sand-pits. Build up the organic matter and this should start a beautiful habitat for micro-organisms.

3. Poisoned

afluenza-cureIn an era when we are rushing from one activity to the next, it is easy to think “if a little bit is good then a lot is even better” This is not true of Garden-Love-Potions like fertiliser. Even natural, organic and locally sourced fertiliser is only required sparingly and only as a kick-start. Once the organisms are thriving, let them be. Don’t let your relationship with the soil become toxic.

4. Exhausted

Enthusiastic people are prone to over-commitment. They put their hands up at community meetings, cook-up great feasts for family and friends, work on the board of directors for lots of projects and then, OUCH – the inevitable mishap brings their plans tumbling into chaos.

Design the garden to provide for itself.  Let the leaves sit to decompose in flower beds. Design to let the water slowly percolate through the garden beds. Let the plants self-seed.

In truth, plants like being part of a community. A sapling that is planted all on its own has to endure full sun, hurling winds, stinging rain and children’s misguided footballs.  Whereas, deep in a forest, a sapling is nurtured by its elders and then rises to fill their void when they are struck down by the elements. A harsh adolescence for a garden will either kill it or forever bear the scars.

5. Stressed

Some gardens are on high alert. They are cracked up and full of weeds because they are desperately trying to correct imbalances and build a habitat for wildlife again.

Lets talk about weeds. When a garden has weeds this means the gardener has neglected to plant anything else that would thrive in that place. Sometimes weeds are your friend, helping you rejuvenate an exhausted soil. Pulling out the weeds can be akin to pulling out the life-support for a garden. If your garden needs a lot of maintenance, it will not give you much joy. Vandana Shiva challenges us “What will life look like when we finally win the war against nature?”

 6. Swooning

Some gardens are Fashion Victims. They are in a constant state of hysterical rapture or ecstasy. They try everything possible to be dramatically striking.

Is you garden desperately screaming for your attention? Do you make it change the colour, shapes and philosophies just to stay lovable? Perhaps, one year its Minimalism next its Abundantly White.

Being trendy is not gentle on the planet or your wallet.  Anything that is in right now is highly likely to be out next season. Garden fashions include vast areas of lawn.  Worst of all is the fashion that covers a garden with hard surfaces. These kill the soil underneath and concentrate fast flowing water onto the little remnants of natural plants and soil. A resilient design includes rain gardens, and soft landscaping. A resilient garden gently adapts over the decades.

7. Starved

A new way of growing food has emerged in this modern era. Some factories can grow food without any living organisms in their soil. [In the hydroponics industry it isn’t even called soil – it is called a growing media].  Factory garden systems need a constant supply of nutrients, climate control, sophisticated water systems, reliable energy supplies and very close monitoring.  Sitting in a hydroponics factory really doesn’t feel the same as sitting in an abundant permaculture glade full of food and wildlife. What this tells us is how amazing a natural system truly is.

Let’s pause before you really kill that garden. Would you be better off with an amicable split? Can you afford the guilt? OK, maybe, but can you really afford the diminished real estate value?  You could sell up before the relationship gets really ugly.

If you are too busy for a garden, you might need a garden that doesn’t need you? Luckily for you and the planet, a forest doesn’t ask for any input except to be allowed to exist. The forest plans to be there for you whenever you want to connect.  Help protect a forest for a better future for us all.

8. Deprived

Needy gardens have a weak structure that will break under the slightest neglect.  These gardens have grown accustomed to a regime of control. They expect to be pruned as soon as possible after the wind has ruffled them. They cry for water then as soon as the sun gets too intense because they have developed shallow root systems or have been kept contained and imprisoned in a totally man-made environment.  It is not the garden’s fault. It is the original set up that created this dysfunctional system.

confusion

The only hope for a needy garden is to redesign it. Accept that nature is more powerful than you, even when you think you are the one in control. Learn to let go.  Masanobu Fukuoka developed the art of letting go and observing what is most the productive and compatible way to garden. Everyone’s garden is different and every solution requires observation before action.

9. Lost

Your garden doesn’t understand you.  You stand outside on a beautiful, sunny day but you feel cold. The pergola vine doesn’t drop its leaves to let the winter light. That shrub your Aunt gave you is now a huge tree and keeps dropping leaves into the neighbour’s pool.  They never invite you to their parties.  Your washing line is covered in pollution from the city, so you use the clothes dryer. The electricity bill is ever-increasing.  The path to the bin is mossy and slippery.  The friendly neighbour’s weeds are all over the fence. You wave politely.  A flock of birds roost in the branches of a tree that hangs over the driveway. They sing joyously as they poop all over your car. The children’s play area is burning hot. So, they beg to play virtual reality games instead but they are full of energy.

The house gets noisy so you decide to drive them to their favourite playground miles away. It is attached to a take-away restaurant. Your Grandfather asks why the children are getting fat.  Is this garden determined to kill you? The lack of garden design is the culprit.

10. Crushed

The garden media push is intense and at times, irresistable. Garden expos, magazines and television shows love making us feel that our garden is inadequate. Getting home, we view our own space as dated and full of chores.

We want that totally NOW garden. Go get that enthusiastic and uncommonly attractive design team in the Video. Yes, throw out the existing plants, get in some fancy trees, truck loads of soil, plastic weed-mat, mountains of cement and bright paint. Crush the old garden!

But there can be happy memories and cozy familiarity in tending something old. It costs a lot (emotionally and financially) to kill a garden. Yet it costs very little to be kind, observant and reconcile your love affair with your garden.

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Free From Techno-Confusion

Be Freed from Confusion About New Technologies

confusionThe brave step of supporting a new technology can be full of confusion.  Techno-confusion is mounting as more, and more technologies are invented. The world is desperately searching for technological improvement to help solve climate uncertainty.  [Permaculture is one technological and cultural solution.] Yet even as we discover healthy technologies, humanity will continuously aim to reduce inefficiencies.

Everyone wants to be part of the solution. Many of understand why it is good to search for clean and efficient technologies. But most of us are confused about ‘how to tell what is best’

Joy_Of_Understanding_Permaculture_Visions

How can we rid ourselves of confusion, build our confidence; make informed decisions; remain unswayed by emotion; ignore slick sales pressures and side-step [or lead] new fashion trends?

At PermacultureVisions we created a decision tool to help you determine your own values and priorities. It may also lead you to consider environmental aspects.  The least it can do is help save you time and money.

Master the Art of Decision Making

get an apLectures are useful to get up to speed on facts and figures. Tutoring helps you understand the factors in those decisions. Mentoring guides you as you tailor the choices to suit your individual needs. The table  below is part of our mentorship and teaching program.  Instead of telling you what to buy, like a sales team, we would rather help you make technological choices.

How Can I Compare All the Different Technologies Available?

We can evaluate new technologies and compare like products when we consider each feature and cost. Here is a guide to help you compare technologies or products with similar purpose. This evaluation tool was developed with our students Morgan Stephens, Tessha Mearing, and Penny Cross.

home-grown-teasThe aim of this tool is to equip permaculture designers with a means to evaluate a new technology themselves rather than being told what is best. Technologies change rapidly, so advise can get conflicting and the technology efficiency is dependent on the context of the user.

You can set your own rating value. This will reflect how important this aspect or feature is in your choice. Sit back with a cuppa, set the priorities and enjoy!

GO TO THE COMPARISON TABLE HERE

Be An Innovator

My_Car_Future-top-slice

The consumer can become the leader.  The consumer can test, adapt, and develop techniques and strategies. We can give informed feedback to the product-developers. If the product has modular parts, we often find new uses and by-products . Further inventions can be lead by the grass-roots users.

Be mentored in Your Permaculture Journey

Do a permaculture course with us today.

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Dark Side Of Double-Digging

Double-Digging Crudely Hits Pay Dirt but…

the ultimate aim of production must be to create a harmonious network of rich and free beingsDouble digging is a technique where you dig, put the soil to the side, dig a bit more and toss that second lot of soil into the first hole. Essentially, you are turning the soil and bugs upside down and letting their shocked, dead bodies feed the your new plantings. In thin soils (like dryland soils) you would be bringing up the subsoil and trying to turn it into top soil. Double digging is destructive.

Double-Digging can be Instantly Impressive

The growth on plants (and sometimes the weeds) is quick and leafy. Double digging is an old farming technique used for centuries in countries with cool climates, deep soils and a careful regime where the soil is rested for long periods to try to recover. If you are in the modern world where land is expensive and there is pressure on you to do use (no time to rest it), or you want to use the space that is close to your backdoor not far away in a forgotten back corner of your garden. Then double digging is not your best option.

There is a serious cost to double-digging. Put bluntly, double-digging does irreparable damage to your soil. Double-digging

  • kills the micro-organisms in the soil.  chicken-diggingThe dead creatures make double digging so amazingly productive. Their little bodies become instant fertiliser for the crops.
  • damages the structure of fragile soils and tempts erosion due to weathering by water and wind.
  • can bring up the useless, hard clods of subsoil unless you are digging on a rare fertile flood plain.
  • has a high risk of erosion from the moment vegetation is removed or hard-hoofed animals are put to graze. The typical Australian soil is only centimeters deep. This risk is amplified by the process of digging.
  • releases carbon into the atmosphere.

Industry is too prone to measure success in the immolate terms of cash or profit, and soil and soul can suffer in the process - L Elmhirst 1944Digging can be satisfying.

We can buy a fruit tree, dig a hole and put the tree in the ground. In a short time the tree may be fruiting and voilà we have the start of a food forest. Or do we? A real food forest captures condensation (more condensation can come to your garden than rainfall).  A Permaculture forest builds soil.  Condensation is trapped and rainfall stored in the soil.  Water is used and re-used.  Organisms are nurtured not sacrificed.  A good permaculture forest design optimises the use of natural energies and serves to increase the health of the soil.  Healthy soil gives us healthier trees and more nutritious fruit.

What Soil Really Wants

umbrella fungi North-America Badgerset farm

Good soil has 5 components:

  1. Air (digging does increase the air, but so do worms)
  2. Water (digging can increase water penetration) but if not designed well it can lead to erosion
  3. Micro-organisms (digging kills many of these). Mulching provides them habitat
  4. Nutrients (plants including weeds can mine for nutrients and make good air pockets with their long roots) Biochar can boost the nutrients in the soil as well as increase habitat for micro-organisms.
  5. rock or other growing media such as recycled brick.

Healthy soil grows in height over the years. We can see the somewhat gruesome evidence of this in ancient graveyards where the ground level has risen.

Jerry Glover
Jerry Glover displays the impressive roots of grasses versus grain

What could be more satisfying than Digging?

Simple No-dig Gardens

No-dig gardens can be designed to capture and filter the rain-water and protect the soil and micro-organisms from erosion.  No-dig gardening

  • is physically easier and faster to set up
  • suppresses weeds
  • can regenerate soil (fertile, rocky, sandy or solid clay)
  • requires less effort
  • uses waste materials and
  • evolves into a beautiful garden
our hills_hoistarium
Our abundant little no-dig garden perches on rock-solid subsoil that could not be dug by man or woman.

No dig gardening requires a little patience but the soil is regenerated, fertility is enhanced and the organisms are constantly building in numbers.

Joyous Songs of Worm Charmers

There are many traditional farming techniques where the nutrients and organisms in local forests are brought to their fields to ‘seed’ worms and nutrients into the fields to improve fertility.  Some people have turned it into a quirky sport like worm charming.

Have fun learning about healing the earth with a permaculture course.

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